Grease-gun.



C1 D. FRANCE. GREASE Gum. APPUCATIOHILED IULYG. 1916' Patented Deo'. 24, 1918.

|NvEN'ToR,

WITNESSES ATTonNm tu' sa. ,nii al;

,we il 1l trug? GREASE-GUN.

Specification of Letters Patent.

latented Deco Application filed July 6, i916. Serial No. 107,627.

To all whom z' may concern.'

Be it known that L' CHARLES l). FRANCE, a citizen of the United Statesyresiding at Hoagland, in the county of Allen and State of Indiana, have invented certain new and useful improvements in Gfrease-Guns,l of which the following is a specification.

My invention relatesV to an improved' grease gun.

Although the vinvention is capable of use as a' grease gun broadly, yet it is especially designed to be Carried on a portable truck asaround a garage and be used for the gurl pose of forcing grease or hard oil into differential, transmission or other gears Without waste, in the shortest practical time, and Without danger of unduly soiling the hands 'and clothing of the operator."

Particularly7 the invention aims 'to provide a novel and improved construction adapted to supplant, the present type of grease gun used in the connection. stated and operating on the suction principle since in using such devices, the operator cannot.

at all times tell dthe quantity of lubricant Within the gun cylinder, cannot operate the device in a con'iparatively short period of time, and cannot operate it without AWaste and 'Without unduly soiling the hands of the operator or his clothing,

Further I aim to provide an article of this type having a ineens7 particularly that specifically hereinafter set forth, whereby the contents of the cylinder may be ascertained readily and a construction having the plunger means Carried by a cylinder cover movable relatively to the remainder of the cylinder and capable of being fastened in ri id relation therewith.

ith the foregoing,y and additional objects 'such as will hereinafter appeara in view, the invention has been embodied in one preferred form as hereiimzfte1 described and illustrated in accompanying drawings Figure 1 is a view partly in side elevation and partly in vertical section showing my improved grease gun;

Fig. 2 is a side elevation of screw', and

Fig. 3 is a fragmentary view showing the upper portion of the cylinder in elevation at right angles to Fig. l and a portion .of the gear Wheel. to operate the plunger screw, in section. q

Referring specifically to the drawing, af cylinder is provided which forros t con-- the plunger tainer for hard oil. grease or other lubricant which is composed of a Inain section 4f and.

a cover section This cylinder may be supported stationarily but is preferably carried on portable truck, as around garage or automobile service station. Connected to the main portion l is an outlet nipple 5 to which may removably connect a ilexible hose or tube G adapted to convey the lubricant to the desired mechanism or parts. rThe cover section 5 and section 4- are provided with lugs 7 pivotally joined by a pin as at 8 whereby the cover may be swung vertically. Flanges 9 are provided at the yu'nction of the cylinder sections at and 5 to reinforce the same and forni a better closure therebetween and one of these anges is provided With a space or notch l0 while thc other is provided Wit-l1 a space or notch ll defined by depending flanges l2 formed integral with the flange 9 of section A. A setscrevv 13 is adapted 'to swing in the spaces 10 and ll, being pivoted to'y the lugs l2 as by means of a pin lf3. A thumb nut lsjl may ride on the threads of the screw 13 and be tightly clamped against the upper surface of flange 9 of cover 5 and serve to rigidly connect the cylinder parts and together. ln order to raise the cover 5, the nut M- is loosened and set screu7 13 is swung downwardly so as to disengage the notch 'l0 whereupon said section 5 may be swung vertically on the pivot 8.`

Rising centrally from the top of sect-i911 :5 is a bearing l5 in which a plunger rod .16-

moves vertically and which plunger rod has a screvv7 threaded shank 17 on which is\re movablyyi'astened plates 18 and i9 prefen ably of less diameter than the cylinder and disposing between them a Washer 20, 'for instance, one of rubber', leather or the equivalent and which is of greater diameter than the cylinder so as to overlap the peripheral edge of plate 18 and eifectively 'wipe the inner Wall ofthe cylinder as shown in `flig. l. The plates 18 and ,i9 aiidvvasher Q0 are secured in place by means efa nut 2l.

The rod i6 is provided with an oblate or flat surface at 22 upon which certain designations may be delineated as at 23 to serve as a gage to indicate the quantity of lubricant Within the cylinder.

Said rod i6 is preferably screw threaded as at 24 throughout the major portion of its length and which screw threads are adapted to mesh with and coperate with the screw threads Q5 provided in the central bore of a Cit bevel gear Wheel 26 4which rests upon the bearing 15 as shown in Figs. l and 3e It will be realized that through the turning of gear Wheel 26 the plunger and its rod will move vertically Within the cylinder and expel the lubricant therefrom through the nip! ple 3 and hose 6 to the desired mechanism or parte. v

Any suitable means may be provided to operate the rod 16. For instance a bevel gear Wheel 27 may mesh with the gear Wheel 26, having a shaft 28 supported in a bearing 29 riding from and secured tothe cover 5. Also the sha't 28 may have a handle 29 rigidly secured thereto by a set screw 30 and which is provided with a grip at 3l.

It will be realized that in use, as handle 29 is turned, gear Wheels 26 and 27 Will cause the shaft 28 to revolve and move vertically as Well Within the cylinder 4-5 so as to expel the lubricant therefrom. At the 'same time, the indications 23 may be observed at the plane of the top surface of gear wheel 26 in order to ascertain the contents of the cylinder Q- 5. When lling the cylinder, the nut le is first adjusted so that the top 5 may swing on the pivot 8 in order to expose the top of the part 4 thereof.

While l. have stated a. specific use for the o-rease gun, and described the construction. in detail, yet it is to be understood, that I do not limit myself to any particular use nor to any particular construction since the de-v tails may be varied Within the spirit and scope of appended claim.

neeeae cla-im:

a grease gun, a cylinder, a closure member hingedly secured to said cylinder at the upper end thereof, means for normally securing said closure member in closed posi# tion, a beveled gear rotatably supported by the closure member above the central portion thereof, a plunger rod threaded through the said gear and slidable through the top of. the closure member, a beveled gear rotatably supported by said closure member and meshing with the beveled gear for receiving the plunger rod, means carried by the closure member for .rotating the second mentioned lbeveled gear, and a piston secured onV the lowerv end of theplunger rod and o eratve in said cylinder, said closure member being provided with a cylindrical recess coinciding With the bore of the cylinder When the closure member v is in operative position, said recess being of greater depth than the thickness of the iston so as'to permit said piston to be raised to such a height as to be positioned entirely Within the closure member and render it possible to swing the closure member into open position about its axis of movement together rith the 'piston and operating means there- In testimony whereof aiiix my signature y 

